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250 SHO Ringfree/Biobor #10931080 06/21/15 01:22 PM
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GOODSON Offline OP
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I recently purchased a boat with a 250 sho and I have been running Yamaha Ringfree but I know this is not a ethanol buster. Is it recommended that you run Ringfree and an ethanol buster such as Biobor? Also is there a certain octane you should run on the gas?This is my first four stroke and in the past I always ran Biobor on my pro xs. Thanks

Moritz Chevrolet - 9101 Camp Bowie W Blvd, Fort Worth, TX - Monte Coon (817) 696-2003
Re: 250 SHO Ringfree/Biobor [Re: GOODSON] #10931139 06/21/15 02:06 PM
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lamoon78 Offline
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Ringfree and Biobor and check the manuel for what octane gas to run.

Last edited by lamoon78; 06/21/15 02:06 PM.
Re: 250 SHO Ringfree/Biobor [Re: GOODSON] #10931149 06/21/15 02:11 PM
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Bonedoc Offline
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My Skeeter Dealer told me to run midlevel octane 89 in my SHO along with Ringfree and ethanol stabilizer such as Biobor.

Re: 250 SHO Ringfree/Biobor [Re: GOODSON] #10931164 06/21/15 02:17 PM
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jfdawson Offline
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Theres a flavor of ring free with fuel additive ( for ethenol ) that's available:

http://www.amazon.com/Yamaha-ACC-RNGFR-P...amaha+ring+free

I run this in the recommended dose plus I put about a 1/4 of the dose of biobor in too. Might be too much fuel treatment, but I've not had any issues. I also have a fuel water separator filter too. Newer model Skeeter probably came from the factory with this:


Re: 250 SHO Ringfree/Biobor [Re: GOODSON] #10931189 06/21/15 02:30 PM
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Jarrett Latta Offline
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Yup water filter is a great addition that most people overlook

Re: 250 SHO Ringfree/Biobor [Re: GOODSON] #10931196 06/21/15 02:35 PM
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reelswift Offline
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Change my H2O seperator along with lower gear oil annually its just part of engine maintenance.


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Re: 250 SHO Ringfree/Biobor [Re: GOODSON] #10931200 06/21/15 02:38 PM
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GOODSON Offline OP
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Thanks for all the help! Mine is a 2012 and doesn't have the separator but will get one added on.

Re: 250 SHO Ringfree/Biobor [Re: GOODSON] #10931206 06/21/15 02:40 PM
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reelswift Offline
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Did you look in the very back of the transom some are mounted there and difficult to see and or reach ?


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Re: 250 SHO Ringfree/Biobor [Re: reelswift] #10931276 06/21/15 03:19 PM
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forkduc Offline
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Just trace the line from the build to the engine. My dealer and Yahmaha manual say 89 octane also. Mine's a 2014

Re: 250 SHO Ringfree/Biobor [Re: GOODSON] #10931285 06/21/15 03:30 PM
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Just looked and did not find the water separator.

Re: 250 SHO Ringfree/Biobor [Re: GOODSON] #10931311 06/21/15 03:54 PM
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KB1953 Offline
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I'm sure you have one with a SHO.

Re: 250 SHO Ringfree/Biobor [Re: GOODSON] #10931330 06/21/15 04:12 PM
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My new Merc 250XS has a fuel filter/water separator as big as the after market in-line types I have had on other boats. Its under the cowling. I assume this is adequate. The SHO not have a built-in separator?

Re: 250 SHO Ringfree/Biobor [Re: GOODSON] #10931344 06/21/15 04:23 PM
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reelswift Offline
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Mine has a large water seperator/fuel filter thats a screw on version similar to a diesel engine water sep


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Re: 250 SHO Ringfree/Biobor [Re: GOODSON] #10931373 06/21/15 04:43 PM
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lamoon78 Offline
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You should have one mine was mounted directly in front of engine in the compartment you couldnt see it unless you stuck your head down in there to look you couldnt see it standing on the ground looking.

Re: 250 SHO Ringfree/Biobor [Re: GOODSON] #10931849 06/21/15 11:40 PM
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wacky freak Offline
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I have a 2012 and it has one. Very hard to see.

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